Air-valve for pumps.



A. W. BURKS.

AIR VALVE FOR PUMPS. APPLICATION FILED Aus.1s, 191T;

Patented July 16, 1918.

In :2- EN Tr: E %%M ARTHUR W. BURKS, OF DECATUR, ILLINOIS, ASSIGNOR TO DECATUR PUMP & MFGFCOQ OF DECATUR, ILLINOIS, A CORPORATION OF ILLINOIS.

AIR-VALVE FOR PUMPS.

Application filed August 13, 1917.

"of Illinois, have invented new and useful Improvements in Air-Valves for Pumps, of which the following is a specification.

My invention relates to improvements in air valves for pumps and is designed to provide a valve for controlling the admission of air into the pumps of water pumping systems, and one which will also prevent leakage of water and other fluid during the pumping operation.

A further object of this invention is the provision'of a reservoir connected to communicate with the interior of the cylinder of a pump havin a check valve in the pas sage to the cylinder, the opening of the passage being near the bottom of the reservoir, the reservoir having a controllable air opening.

To the accomplishment of the foregoing and such other objects as may hereinafter appear, my invention consists in the combination, construction and arrangement of parts hereinafter described and then sought to be defined in the appended claims, refer ence being had to the accompanying drawings forming a part hereof, and which show merely for the purpose of illustrative disclosure, two embodiments of my invention, it being understood that various changes may be made in practice within the scope of the claims without digressing from my inventive idea.

In the drawings,

Figure 1 represents a sectional view of a conventional form of my invention;

Fig. 2 represents a side elevation of one form of pump shown with a device constructed according to my invention applied thereto;

Fig. 3 is a vertical cross section of the valve, and

Fig. 4 is an enlarged section showing the manner of mounting the valve.

Referring first to Figs. 2, 3 and 4 of the drawings, the numeral 1 designates a pump having the cylinder 2 and provided with the double piston and valves, not shown. A projection 3 is provided on a side thereof havin a compartment leading into a chamber w iich communicates with the interior of the cylinder.

Specification of Letters Patent.

Patented July 16, 1918.

Serial No. 185,850.

The valve-proper 4 is provided with the screw-threaded attaching portion 5, whereby it is secured to the projection 3. The lower portion thereof is in the form of the cup or reservoir 6, having the sleeve or tube 7 secured therein, (the lower end of which opens into the reservoir near the bottom) and is beveled as at 8, so as to insure its proper position when inserted. Slidably mounted in this tube or sleeve 7 is a stem 9 of the valve 10 which rests on the end of the valve proper and moves this compartment in the projection 3.

One side of the cup or reservoir 6 is tapped as at 11 to receive the screw 12 provided with the wings 13 to facilitate adjustment. This screw is provided with the plurality of grooves ll leading along the sides thereof which admit air into the reservoir or cup. Shoulder 14 is for the purpose of completely shutting ofl the supply of air.

In operation, air will be drawn into the cup or reservoir and up into the cylinder upon the reciprocation of the piston.

A conventional form illustrating my invention is shown in Fig. 1, wherein 15 designatcs the cylinder having passage 16 leading to the bottom of reservoir 17 with the check valve 18 located therein. The reservoir has the inlet or stop cook 19 whereby a suitable supply of airmay be admitted as desired. The operation is the same as previously described, so that when suflicient leakage accumulates in the reservoir, it will be drawn back with the pump.

It is therefore seen that I have provided a very simple and effective device for controlling the admission of air into the pumping system and prevent dripping or leakage from the pump.

What I claim is:

1. A device of the character described, including in combination, a body adapted to be attached to a pump and to communicate with the interior of the cylinder thereof, said body being enlarged to form a reservoir, the passage into the cylinder opening near the bottom of the reservoir, a valve in said passage, and means for admitting air into said reservoir.

2. A device of the character described, including in combination, a body adapted to be attached to a pump and having a passage communicatin with the cylinder thereof, the body of t e device forming a reservoir and the opening from the passage into the reservoir being near the bottom of the reservoir, a check valve for controlling the ipassage, and means for admitting air into said reservoir. v

3. A device of the character described, in cluding in combination, a body adapted to be attached to a imp and to con'nniinicate With the interior of the cylinder thereof, said body being enlarged to form a reservoir and also having a tube mounted therein, a valve having a stem slidably mounted within said tube, and; means for admitting air into said reservoir. v

4. A device of the character described, includingin combination, a body adapted to be attached to a pump and to communicate with the interior of the cylinder thereof, said body being enlarged to form a reservoir, a valve for controlling the communication between the reservoir and cylinder, means for admitting air into. said reservoir, said means comprising a screw having a plurality of grooves along its sides to admit air into the reservoir.

,5. A device of the character described, including in combination, a body adapted to be attached to a pump and to communicate With the interior of the cylinder thereof, said body being enlarged to form a reser- Go'ial'es 0}: this. patent may be obtained an voir and also having a tube mounted there in, a valve having a stem slidably mounted within said tube, and means for admitting air into said reservoir, said tube having its lower end cut at an incline With its extremity touching the body of the reservoir.

6. In combination with a cylinder of a pump having a compartment in communication therewith, an air valve connected to said compartment and comprising a body portion having a reservoir, a tube mounted therein and extending to a point near the bottom of the reservoir, a valve mounted to move in said compartment and having a stem fitting said tube, and means for admitting air into said reservoir.

7 In combination with a cylinder of a pump having a compartment in communication therewith, an air valve connected to said compartment and comprising a body portion having a reservoir, a tube mounted therein and extending to a point near the bottom thereof, a valve mounted to move in said compartment and having a stem fitting said tube, adjustable means for admitting air into said reservoir, said adjustable means comprising a screw and a plurality of grooves along its sides.

ARTHUR W. BURKS we we ma, by addressing are *canaissaae'r of 1 mm, Washington, D. 0." 

